Yarn-spinning machine and method.



L. W. DOWNES.

YARN SPINNING MACHiNE AND METHOD.

APPLICATION FILED was. mu.

1 298,475. Patented Mar. 25, 1919.

2 shins-swan 1.

mun/v7 01v. [0212s MIMI/mes L. W. DUWNES.

YARN SPINNING MACHINE AND METHGD nPPuc/mon HLEU was, an

1 $298,475. "momma Mar. 25, 191 .1

UNITED STATES PATENT OFFICE.

LOUIS W. DOWNES, OF PROVIDENCE, RHODE ISLAND, ASSIGNOB TO D 62 W FUSE COMPANY, OF PROVIDENCE, ,RHODE ISLAND, A CORPOJEl-ATION F RHODE ISLAND.

YARN-SPINNING MACHINE AND METEOD,

Specification of Letters Patent.

Patented Mar. 25, 1919.

Application filed August 6. 191?. Serial No. 184.661.

' To all whom it may concern:

Be it known that I, LOUIS W. DowNEs, citizen of the United States, and resident of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Yarn-Spinning Machines and Methods, of which the followings is a specification.

This invention relates to yarn spinning machines, or that class of apparatus designed for covering a core or filament with a layer of asbestos or other fibers adapted to be Woven or otherwise formed into any desired fabric.

Heretotore in making yarns of all asbestos fibers it has been found necessary in order to provide yarns of suliieient strength to employ the longest and strongest. fibers of asbestos for this purpose, which selected stock is scarce and very expensive.

Then again owing to the delicacy or lack of stren th of the fibers of this material, the old method of producing these all asbestos yarns by means of the usual nude or ring spinning process was extremely slow and expensive.

In some cases in order to obtain the necessary stren th, cotton fibers have been mixed with as estos fibers and the whole then spun into a yarn. But. in order to obtain such a thread of a strength which would equal that having a core of yarn, considerably more cotton must be mixed with the asbestos fibers than is used in the core. Then again by bringing the cotton fibers to the sur ace they are exposed directly to the action of a destroying heat which is not the case when they are entirely enveloped in a casing of heat resisting asbestos fibers.

In order to obviate these difficulties I have provided a core or filament of strong thread or yarn which may be made of linen, hemp, cotton, or other suitable material and around this core or base l wind or form a coating, envelo 1, or sheath of carded asbestos fibers which may be of the shorter variety and therefore much less cx 'iensivc.

By the employment of the ordinary or cheaper grade of stock I am enabled to form it covering for the core and so provide a composite. inrombustlble yarn whose strength and durability is greater than an all or part a wcstos yarn and which by my method of construction is comparatively inexpensive to produce.

A further object of the invention is to provide simple and efi'ective means for driving the yarn in the direction of its length, and feeding asbestos fibers to the yarn, and also to rotate the traveling yarn at a predetermined spced on its axis to wind the fibers in a helical form upon its surface.

By this method the core or filament of yarn may be covered or coated with asbestos fibers with great rapidity, thereby not only producing asbestos 'arn of great strengt and at small cost, ut also producing the yarn much faster than is possible by the old method.

A still further object of this invention is to engage the yarn on diametrically opposite sides, by oppositely moving members for twisting the yarn, said twisters being provided with means whereby they may intermittently release the yarn for the purpose of permitting it to untwist automatically.

By intermittently twisting and releasing the arn I avoid the necessity of a double rotation of its delivery and take-up reels, that is one rotation about their own axes, and the other about the axis of the thread. The mechanism for accomplishing the double rotation being both complicated and impractical for such a process.

With these and other objects in view my invention consists of certain novel features of construction as will be more fully described and particularly pointed out in the appended claims.

A simple form of ap aratus is illustrated in the accompanying rawings in which- Figure 1.- is a diagrammatic view illustrating one form of carding rolls and the means for operating upon the yarn to intermittently twist and release the same.

Fig. 2. is a detail of the yarn twisting rolls. representing them in the act of twistinn the yarn.

Fig. 3.- represents the yarn twisting Hills in position to release the yarn and permit it to return to its normal degree of .lwisl.

Fig. l.--- is a detail in section showing the cmlstllu-tlnn by which the Working face of each twist roll is rendered soft to engage the thread with a yicldable grip.

Fig. 5.-- is a plan View of the mechanism shown in Fig. 1 illustrating the yarn as being fed across the face of the delivery card roll.

Fig. 6. is a. detail illustrating the main ner 0f the progressive winding ot the ashes tos fibers around the core or filament to pre duee the desired thickness of covering.

Fig. 7k is a plan view slanving a pertinn of the delivery card and illustrating the teeth as being inciinud in the direction of the lengitudinal travel of the yarn.

Referring to the simplified mechanism illustrated in the drawings; 10 designates the two rolls liy wliivh the roving or sliver ll of asbestos is fed to the irst card rell 1.2 from which the fibers are herein illustrated as being taken up by the delivery card 13 and carried around tn the yarn 14 where these carded fibers are rmumed from the card by, and are wound npen the thread in a helical form, in-the manner hereinafter described.

As illustrated in Fig. 5, the thread or core of yarn is led from one reel 15 on one side, across the face of the dei very card will 13 and wound on the opposite side, upon ihe take-up reel 16, which may be driven by any suitable means net shown.

()ne of the easeutia-l feature (if my inventien is that the thread in yarn engaged at some point intermediate the supporting; Spools m reels 15 and 1G. and interaiitti-i'dly rotated and twisted to take up the iibei l. 1d then released in untwid ammnatiezill and instantaneously. this quirk retrograde rniw tion of the yarn having nu eilect upon the fibers air-ea l) .vnund timrmu.

Tu accomplish th n minding aetien in a sinip e and. effective manner i ha e prnvided a pair 05 rolls 1". and 38 ahewn as being driven in unisnn iiy the sigma-lief. chain 2'3 and oeitioned tn rngga thr thread in: die-- metrically npprn'i r side. and Willi-" Jam" faces in mutant. with the thread name in opposite directiens to ro ate and twist. that portion of the thread extending between the reels or auppurts, d gzrei'era l v in lit! direction oppusite t0 time reuhinn ut' t m- :ir livery card. in take up the ii 'rzra t ain the face (if this card and win? them about the thread.

In order that this thread satay he relezwd at intervals after llfli'i'il f ii '21 mam l haw provided a series 0? illntatieaa er reveal-H 19 and 20 in the twist ruihx Williil li lf'fii svi are arranged, to regiai'rr in ii -2 manner hm! illustrated in Fig. 3 to relraee the thread at predeterinined intervala permitting the extra twister lay. set into the thread. to instantly snap back or u ntwist and that without unwinding the fibers Eaid rim-mu. after whivh the rolls again engage the thread and the twisting and winding uper-- atinn is repeated.

As this winding :u-tlnn is taking pine-. ilathread is also trmelifig in the dirertinu (it its. length across the aurfzu'e of the card roll, thug causing the fibers tn he laid about the enre in helieal term and be built a by winding rue layer upon another nntii the required thickness has; been termed apen the thread. I have de eribed the i l'Tll'iiliit il mi i'LCLShQT'S in liutii of these twist rail" releasing the thi Ml, nut amsuitable i may in: eaiplnyed it'nr PPOYXL ng extra lietween these mile at intervals during rniatinn fer releasing the thread.

in order to provide Sim 310 and mean; in these tw st rails or these rolls. as at. 531, see Fig. 4, with a. ti layer at ehamnis er other soft tough mam:- rial so as ta yieldingly grip the three-.2 tn uaaPensete fer any slight ltitf1tliliii9 thir mess of tile iiiiread er rewiring.

The operation (if the lows:

apparatus is inireader yarn drawn train the re and t: )5 ti; ti 1 face if the Li'fl X3, and 15 related by the iiwmili g rullra preferab y in a directi n'. opposite i:

V 'r- Ii ilh' lfjfall ll its rimi'wir a3 5 apres nted ii; the deiiiery rard, The ruin.- lira iillfitlr of the thread a. d end. are Fir 24a Hind) adjusted that the ilill'fitt in and enmpieteiy cleans the SGlitli f ,Lard \i'lule passing serve? iis fare.

filtlllil in piaetiee to he n? sairaiaa m'civr in tzirilitate the renaming of the i if aslwdm trnm the teeth hi he (11rd, giiilh the teeth *it' tile raid iitfltl'i v n the iil' ft'li ti a? the axial 11: vei iii iii t i. if;

illleitrzdrd :ii .1". we 9 3 .3, '3 1) that may in ii: lid. lit ers i. is it win-vii mar Haw-ii mi! and i l w li d it) aim ii i i uvriuaj ii: iiul l tii ftll V l' l i it! the 1 all rallv wuiu d await the niilfflt'fl at Me 0| iilannan. The tint-ii: a (if the catering at aslwsles-iiiarre en tlii. thread degj enda up n the width oi the delivery rail and th s relative axial speed of the thread. In EEi'ier made. in m-der tn apply a thin coating of :wlawtns iiliere mi the thread, the delivery rail must he narinw er the axial speed iii' the thread lliltji'lifi relatively fast UCI() 'S'% I'm-r of this will and when a heavier mat is required a wider faced delivery roll en:-

reduced.

The above method of winding as estos I fibers on the thread core applies equally well to any other fibers with which it is desired to cover the core or foundation thread.

The coating of fibers as first wound from the delivery card upon the thread is li ht and flufiy but is better matted and fo ted about the core by the action of the twist rolls 17 and 18 between which the newly covered thread is passed.

After this yarn has been covered it may be wound directly upon the reel 16 and subse quently finished or it may be passed. through the usual ironing or matting members (not shown) for the purpose of pressing on smoothing out, crowdin together, and forcing the fibers more close y upon the core before bein spooled.

Where it is desired to produce,a soft faced yarn the use of Inc or cement is unnecea sar but where a and faced yarn is required a g us or oil 'zing Or other suitable adhesive may be employe The primary object in twisting the am to wind the fibers about it an then re easing the same to automatically un wist, is that by so doing I avoid the complicated mechanism which would be necessary for providin a double rotation of the supporting reels, tint is to rotate each upon its own axis and also about. that of the thread.

By the use of my improved composite yarn any kind of high heat resistingscord or tabric may be produced commcrcntlly at minimum expense.

The foregoing description is directed solely toward the special construction of carding and spinning apparatus illustrated, but I desire it to be understood that I am not restricted to the particular type shown but reserve the privilege of resorting to all the mechanical changes to which thc device is susceptible, the invention being defined and limited only by the terms of the appended claims.

Claims:

1. In a yarn spinning machine, means for moving the yarn in the direction of its length, means for feeding asbestos fibers 'to the yarn, means for engaging the trav cling yarn to rotate. it on its axis while being advanced, and means whereby the yarn is periodicnlly released to freely return to normal.

2. In a yarn-spinning machine, means for moving the yarn in the direction of its length, means for feeding asbestos fibers to the yarn, means for acting upon the traveling yarn to press and twist it andthcn' periodically release it from its twisted tension to freely untwist to normal for the pm pose of winding the asbestos fibers upon its surface.

3. In a yarn-spinning machine. mcam for moving the yarn in the direction of its for presenting asbestos fibers means for alternately acting yarn to twist it a predetermined number of times and then release the yarn from its twisted tension to freely untwist automatically.

4, In a arn-spinnlng machine, means for driving t e yarn in the direction of its length, a traveling toothed member for progressively presenting a thin layer of carded asbestos fibers to the yarn, means for intermittently setting a twist in the traveling yarn to wind the asbestos fibers upon its surface and then releasing it to freely untwist automatically to normal. 5. In a yarn spinning machine, a carrier having a thin surface layer of asbestos fibers, means for moving the yarn in the direction of its length across said surface, and means for alternately twisting and releasin said traveling yarn to wind the fibers as ed by the carrier upon its surface.

6. In a yarn-spinning machine, a carrier having a thin surface layer of carded asbestos. fibers, means on opposite sides of said carrier for supportinguand moving the yarn across its surface, and means for engaging and twisting that portion of the yarn intermediate said supports and then releasing it to freely untwist between said supports.

7. In a yarn spinning machine means for moving the yarn in the direction of its length, means for feeding fibers to the traveling yarn, a pair of oppositely disposed rotating rolls for acting upon and twisting the traveling yarn intermittently to wind the asbestos fibers upon its surface.

8. In a yarn spinning machine means for moving the yarn in the direction of its length, means for feeding carded asbestos fibers to the traveling yarn, a pair of oppositely disposed rotating rolls for cngagmg and twisting the traveling yarn to wind the asbestos fibers upon its surface and means for causing sad rolls to intermittently release the yarn to untwist.

9. In a yarn spinning machine, means for moving the yarn in the direction of its length, a toothed member for feeding asbestos fibers to the yarn, the teeth on said member being inclined in the direction of travel of the yarn, and means for also rotating the yarn intermittently to draw the fibers from said teeth and wrap thcm about its surface.

10. The method of forming yarn which consists in covering a base tilI(-l|1i (ll" core with a cool ing of fibers by pressing the yarn and twisting it beyond its normal luv to wind the fibers upon its surface and pcriodirally releasing the yarn from its twisted tension to freely return to its normal twist.

11. The method of forming a composite yarn which consists in non-rotntivcly supporting a thread or core at two separated length, means to the yarn, upon the traveling carded asbestos points, feeding the fibers to the unsupported portion, twisting that portion between said su gaorts to take up and wind the fibers about sal core, and intermittently releasin the 5 thread from its twisted tension to free y return to its normal lay between said supports.

12. The method of forming it com iteryarn which consists in covering a base t read or core with a, coating of fibers by first twisting and then releasing it from its twisted 10 .tension to freely return to its normal twist whereby its rotation causes the fibers to be Wmind upon ite surface.

LOUIS W. DOWNES. Witn:

Gnonem W. S'rnmm, Gnomm F. Sumner. 

